Best California King Mattress

UPDATED
Written by Garen Glazier

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During your search for a new mattress, you might have come across options for a California king size. While not as common these days as the standard king size mattress, the California king actually predates the regular king size. The latter was standardized at 76 inches wide by 80 inches long during the mid-20th century as a convenient way to repurpose two 38-inch-wide twin box springs beneath a single larger mattress. 

At 72 by 84 inches, the California king size is both narrower and longer than a standard king size mattress. The extra leg room is often preferred by taller sleepers and those who sleep with their pets.

Our Top Picks

Best Overall Mattress

Helix Midnight

9.1/10

Helix Midnight
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The Helix Midnight was designed for side sleepers between 130 to 230 pounds, but our tests show its medium firm (6) design is suitable for a wide range of sleeper types. The mattress also sleeps fairly cool, and a reinforced perimeter limits sinkage when you sleep along the edges.

Ideal for Combination Sleepers
Firmness Medium Firm (6)
Feel Medium-Firm Balanced Support
Value Good Value
Pros
  • Balanced construction with appeal for most sleeper types
  • Coil support core with reinforced edge support
  • Upgraded model available with additional lumbar support and an extra memory foam layer
Cons
  • Limited support for sleepers over 230 pounds
  • Surface is fairly responsive and motion isolation is limited
Side Sleepers

Under 130 lbs

8.0/10

130-230 lbs

9.5/10

Above 230 lbs

8.0/10

Back Sleepers

Under 130 lbs

7.5/10

130-230 lbs

9.0/10

Above 230 lbs

7.5/10

Stomach Sleepers

Under 130 lbs

6.0/10

130-230 lbs

7.5/10

Above 230 lbs

6.0/10

The Helix Midnight is a 12-inch hybrid mattress with a breathable polyester cover. A layer of memory foam cushions sleepers, while a second layer of polyfoam helps ease the transition to the support core. The mattress has an 8-inch layer of pocketed coils with a reinforced perimeter. This sits atop a thinner high-density polyfoam base layer that helps absorb motion to prevent disruptions.

Why We Like It

With a nice mix of subtle contouring and sturdy support, the Helix Midnight earned above-average marks in all performance categories from our testing team, with particularly high grades for its strong pressure relief and whisper-quiet design.

How Does It Feel?

With its medium firm (6) feel and contouring memory foam, we found the Helix Midnight relieves pressure for side and back sleepers under 230 pounds. Stomach sleepers under 130 pounds also received strong spinal support during our sleep lab tests. The pocketed coil base encourages airflow to reduce heat retention.

There is also a premium version available, called the Helix Midnight Luxe. This model has a Tencel cover, two memory foam layers, and added lumbar support. Both versions of the Midnight can be upgraded with a GlacioTex Cooling Cover containing conductive fibers designed to draw heat away from sleepers.

Read Our Full Review

Best Value Mattress

Silk & Snow Mattress

7.5/10

Silk & Snow Mattress
$150 off SHOP NOW

The Silk & Snow Mattress adaptive all-foam design should hit the sweet spot for anyone seeking a balance of cushioning and support. Approachable pricing and free shipping throughout the U.S. and Canada also make the mattress a solid pick for budget-conscious shoppers.

Ideal for Combination Sleepers
Firmness Medium (5), Firm (7)
Feel Medium Feel with Deep Contouring
Value Great Value
Pros
  • Open-cell gel memory foam designed to reduce heat buildup
  • Minimal motion transfer when sharing the bed
  • Generous 365-night sleep trial
Cons
  • Foam layers may absorb and trap excess heat
  • Edges sink deeply when pressure is applied
Side Sleepers

Under 130 lbs

8.0/10

130-230 lbs

8.5/10

Above 230 lbs

6.5/10

Back Sleepers

Under 130 lbs

6.5/10

130-230 lbs

7.0/10

Above 230 lbs

5.0/10

Stomach Sleepers

Under 130 lbs

5.5/10

130-230 lbs

6.0/10

Above 230 lbs

4.0/10

Made with 2 inches of high-density memory foam, the all-foam Silk & Snow Mattress offers a plush feel that conforms to sleepers to relieve pressure. The memory foam has an open-cell design and gel infusions designed to maintain a neutral temperature. A 2-inch high-density polyfoam transitional layer and a 6-inch high-density polyfoam base complete the design.

Why We Like It

You can choose between medium (5) or firm (7) designs. All of our testers weighing less than 130 pounds gave the softer Silk & Snow excellent overall ratings regardless of preferred sleep position. Side sleepers between 130 and 230 pounds also enjoyed the medium feel, whereas most back and stomach sleepers on our team preferred the firmer model.

Featuring the strong pressure relief and motion isolation you’d expect from a memory foam mattress, but at a below-average price-point, the Silk & Snow Mattress offers significant value for cost-conscious shoppers.

How Does It Feel?

During partner tests, we found the Silk & Snow provides above-average motion isolation to keep disruptions to a minimum when sharing the bed. It’s also fairly easy to switch positions on this bed.

Most Comfortable Mattress

DreamCloud Classic Hybrid

8.2/10

DreamCloud Classic Hybrid
Up to 60% off mattresses + $599 in free sleep accessories SHOP NOW

The DreamCloud Mattress is a medium firm (6) luxury hybrid with adaptive foam layers and a robust coil system. This combination of cushioning comfort layers and sturdy support give the mattress broad appeal across different body types and sleep positions.

Ideal for Combination Sleepers
Firmness Medium Firm (6)
Feel Cushioned, Supportive Surface
Value Great Value
Pros
  • Cashmere blend cover wicks moisture to help keep the sleep surface cooler
  • Responsive hybrid design with strong edge support
  • Yearlong sleep trial and limited lifetime warranty
Cons
  • May feel too firm for side and back sleepers under 230 pounds
  • Foam layers may develop indentations quickly
Side Sleepers

Under 130 lbs

7.0/10

130-230 lbs

8.0/10

Above 230 lbs

/10

Back Sleepers

Under 130 lbs

/10

130-230 lbs

7.0/10

Above 230 lbs

6.0/10

Stomach Sleepers

Under 130 lbs

7.0/10

130-230 lbs

6.0/10

Above 230 lbs

5.0/10

The DreamCloud Mattress features a quilted polyfoam cover sheathed in a cashmere blend that helps wick moisture away from the sleeper. This is followed by a layer of memory foam with gel infusions engineered to sleep cool. A layer of firmer polyfoam helps ease the transition onto the pocketed coil support core, and a final layer of polyfoam provides a sturdy base.

Why We Like It

Our testing team rated the DreamCloud as medium firm (6) on our 10-point firmness scale. They noted that its balanced feel performed well for back and stomach sleepers across all weight groups and side sleepers over 130 pounds.

Cushioning yet supportive, the DreamCloud is a solid all-around pick for a variety of sleepers, particularly those who tend to overheat and people who value strong pressure relief in a hybrid mattress.

How Does It Feel?

Because they are individually wrapped, the coils are quieter and transfer less motion than regular innerspring coils. The coil support core also adds bounce, aids with airflow and heat regulation, and helps strengthen the perimeter of the mattress to prevent feelings of roll-off along the edges.

Read Our Full Review

Best Luxury Mattress

Saatva Latex Hybrid

8.8/10

Saatva Latex Hybrid
Buy more, save more. Up to $625 off. SHOP NOW

The Saatva Latex Hybrid uses zoned latex and coil layers, resulting in extra reinforcement for your midsection and a gentler feel for lighter areas of the body. The mattress also excels at temperature control, and all orders come with free White Glove delivery and a 365-night trial.

Ideal for Hot Sleepers
Firmness Medium Firm (6)
Feel Buoyant, Responsive Support
Value Good Value
Pros
  • Natural and organic materials help maintain a neutral temperature
  • Pocketed coil core strengthens the perimeter to allow full use of the bed
  • Shipped with complimentary White Glove delivery in the contiguous U.S.
Cons
  • Responsive surface does not isolate much motion transfer
  • Expensive pricing may be a barrier for budget-conscious shoppers
Side Sleepers

Under 130 lbs

7.0/10

130-230 lbs

7.5/10

Above 230 lbs

8.0/10

Back Sleepers

Under 130 lbs

8.0/10

130-230 lbs

8.0/10

Above 230 lbs

7.5/10

Stomach Sleepers

Under 130 lbs

7.5/10

130-230 lbs

7.5/10

Above 230 lbs

7.0/10

Saatva is best known for its flagship luxury innerspring mattress, but the company also makes a latex hybrid for those who prefer the feel of latex.

Why We Like It

Due to its breathable natural materials, the Saatva Latex Hybrid offers strong temperature regulation suitable for hot sleepers. Latex and coil layers provide good responsiveness, allowing for easy movement. Our testers noticed minimal sinkage around the perimeter, so sleepers should be able to spread out over the full mattress surface.

Rating a medium firm (6) on our firmness scale, we found this model is best suited to back and stomach sleepers, as well as side sleepers over 130 pounds. It received the highest grades from stomach and back sleepers between 130 and 230 pounds, who appreciated the support of its pocketed coils and the gentle contouring of its zoned latex layer.

If you like the feel of latex mattresses but also want the robust support of a coil-based core, the Saatva Latex Hybrid offers a best-of-both-worlds approach with sustainably sourced materials and zoned reinforcement for the lower back and hips.

How Does It Feel?

The 12-inch Saatva Latex Hybrid has a Euro-top design with a breathable cotton cover and a wool flame barrier, both of which are certified organic by the Global Organic Textile Standard (GOTS). Wool is known for its ability to wick moisture, helping keep the surface of the bed cool and dry.

Next, a 3-inch layer of natural latex with pincore holes adds bounce and extra room for airflow. The latex is zoned into five sections, with targeted support for the lumbar area. A pocketed coil base adds further support to maintain healthy posture. The entire mattress is hand-tufted and held together at the base, which is made with GOTS-certified organic cotton and wool.

Read Our Full Review

Best Mattress for Side Sleepers

Layla Hybrid

8.4/10

Layla Hybrid
Extra $10 off your order with exclusive code: sleepy10 SHOP NOW

With a medium soft (4) feel on one side and a firm (7) feel on the other, the Layla Hybrid’s flippable foam hybrid design provides excellent cushioning for side sleepers across different weight groups. The mattress also sleeps exceptionally cool and feels secure along the perimeter.

Ideal for Side Sleepers Of Any Weight
Firmness Reversible: Medium Soft (4), Firm (7)
Feel Versatile Pressure Relief
Value Great Value
Pros
  • Reversible construction with two firmness levels to choose from
  • Copper- and gel-infused memory foam engineered to stay cool
  • Zoned polyfoam layer and pocketed coils designed to encourage healthy posture
Cons
  • Foam layers may sink and hinder movement — especially on the softer side
  • Mattress is too heavy to lift and flip without assistance
Side Sleepers

Under 130 lbs

7.5/10

130-230 lbs

9.0/10

Above 230 lbs

7.5/10

Back Sleepers

Under 130 lbs

7.0/10

130-230 lbs

8.5/10

Above 230 lbs

7.0/10

Stomach Sleepers

Under 130 lbs

5.5/10

130-230 lbs

7.0/10

Above 230 lbs

5.5/10

Featuring a flippable design with a different firmness on each side, the 13-inch Layla Hybrid is ideal for sleepers with changing preferences or those who aren’t sure which firmness they prefer. The medium soft (4) side has 2.5 inches of copper-gel memory foam and 2 inches of zoned polyfoam. The firm (7) side has 1 inch of copper-gel memory foam and a 1.5-inch layer of zoned polyfoam. A 6-inch layer of pocketed coils functions as the support core for both sides.

Why We Like It

Between its two sides, the Layla Hybrid can accommodate sleepers of most body types and sleeping positions. We found the soft side most suitable for side sleepers under 230 pounds, though back and stomach sleepers under 130 pounds also enjoyed its plush feel. The firm side received the highest praise from side sleepers over 230 pounds and back and stomach sleepers over 130 pounds, who noted that their bodies sank just enough into the thin memory foam layer to relieve pressure without sacrificing support.

With its choice of two firmness levels, our testers found the Layla Hybrid suitable for side sleepers in all weight groups. Its versatility also makes it a good choice for Airbnb rooms or guest bedrooms.

How Does It Feel?

Copper and gel infusions in the memory foam are designed to draw heat away from sleepers. Airflow can also circulate through the support core, and the coils have a double row of stronger coils around the edges to reinforce the perimeter of the bed. Handles are thoughtfully placed on the sides to assist with flipping the mattress, and the polyester-blend cover is removable for easier cleaning.

Read Our Full Review

Compare Our Top Picks

Mattress Mattress Type Ideal For Value Sleep Trial
Helix Midnight Hybrid Combination Sleepers Good Value 100 nights (30-night requirement)
Silk & Snow Mattress Foam Combination Sleepers Great Value 365 nights (30-night requirement)
DreamCloud Classic Hybrid Hybrid Combination Sleepers Great Value 365 nights (30-night requirement)
Saatva Latex Hybrid Hybrid Hot Sleepers Good Value 365 Nights ($99 Return Fee)
Layla Hybrid Hybrid Side Sleepers Of Any Weight Great Value 120 nights

Why You Should Trust Us

The testing team includes individuals of diverse body types and sleeping positions. We have this range of sleepers to help give us a better view of how each mattress performs for different needs and preferences, which is particularly important to consider when testing mattresses that are meant to be shared by two people.

In addition to the extensive testing performed by our team, our sleep experts also put each mattress through a series of objective tests, such as pressure mapping and temperature control. Our recommendations for the best California king mattresses are the result of many hours of careful research.

More Mattress Size Options

Mattress Type

Who is a California King Mattress Best For?

California king size mattresses are designed for two sleepers. They tend to be preferred by taller people and those who sleep with pets.

  • Taller Individuals: California king mattresses are 4 inches longer than regular king mattresses, making them a logical choice for individuals who need more leg room.
  • Couples Wanting the Extra Length: Extra length at the end of the bed can be convenient when sleeping with a partner, particularly if you disagree on whether to tuck in the blanket at the feet.
  • Those With Long, Rectangular Bedrooms: In addition to being a little longer than king size mattresses, California king models are also slightly narrower. This makes them well suited to longer and narrower bedrooms, especially those that have less space at each side of the bed.
  • People Who Share the End of the Bed With a Pet: Though it’s narrower than a standard king size mattress, the California king size allows more space for your pet to snuggle up at your feet.

Pros

  • More leg room for taller people and those who sleep with pets
  • A good compromise for people who find

Cons

  • Often sold in split configurations that let each sleeper personalize their side of the bed
  • Less suitable for people with small, square bedrooms
  • While fairly common, not every company sells this size

What's the Difference Between a King and a California King?

King size mattresses measure 76 by 80 inches, whereas California king size mattresses measure 72 by 84 inches. These dimensions may vary slightly between manufacturers.

Both king and California king mattresses are considered standard sizes and are usually available from most mattress manufacturers. Many people consider king size a logical step up from the queen size, as these two models have the same length. In this respect, California king mattresses are an anomaly with their longer, thinner shape.

When choosing between the two sizes, it helps to consider your personal preferences, the size and shape of your bedroom, and whether you will be sharing the bed with a partner or a pet.

King vs. California King

Leg Room

California king mattresses offer 4 inches of additional leg room compared with standard king mattresses, at the expense of room at the sides of the bed to stretch out widthwise.

Availability of Bedding

Although king size accessories might be slightly easier to find, most companies sell both king and California king options for bedding and bed frames.

Price

King size and California king size mattress prices are often identical or nearly identical. These are the two most expensive of the standard mattress sizes, which is something to consider if you need to purchase bedding as well.

Mattress Weight

As the largest standard mattress sizes, California king and king sizes weigh more than their smaller counterparts. If you anticipate trouble moving the bed, one option is to purchase a split model with two sides that can be moved independently.

What About a Split California King Mattress?

A split California king mattress consists of two mattresses placed side by side. Each mattress measures 36 inches in width and 84 inches in length. These are popular with couples who have different sleep preferences, as each side of the bed can feature a different firmness and can move independently on an adjustable base. Not all manufacturers offer split California king sizes.

What Other Types of King Mattress Sizes Are Out There?

Other oversized mattress variants include the Alaskan, Wyoming, and Texas king mattresses. 

At 84 by 84 inches, Wyoming king mattresses are perfectly square. They may be suitable for taller individuals who also value the ability to spread out. 

Texas king mattresses measure 80 by 98 inches, allowing significantly more leg room for taller individuals or those with pets. 

At 108 by 108 inches, it’s very rare to see beds bigger than an Alaskan king. These may be preferred by families who sleep together with more than two people in the bed.

What You Should Know About Buying a California King Mattress

If you’re considering purchasing a California king mattress, there are some practical considerations to take into account.

Bedding and Bed Frame Sizes

A new mattress is a significant investment, particularly if you need to buy matching bedding and a new bed frame. California king mattresses are too long for a standard king size bed frame, and you may find you need longer sheets as well. Before buying your mattress, check prices for accessories so you can account for these in your budget.

Doorways, Hallways, and Room Size

Measurements are particularly important when buying larger mattress sizes like a California king. In addition to planning the floor space necessary for your new bed, don’t forget to measure hallways, doorways, and staircases or elevators if you live in an apartment building. 

Mattresses that are compressed for shipping can be transported more easily and will fit into tighter spaces before they are unboxed, so don’t unpack the mattress until it has reached its final destination. If you need to transport the mattress through tight spaces, consider buying a split California king mattress and bed frame.

Mattress Weight, Mattress Type, and Movability

Foam mattresses are usually the lightest, although higher-density foams may weigh more. Hybrids have added weight from the metal coils, and latex mattresses tend to be the heaviest as well as the most awkward to move. While smaller mattresses can be lifted by one or two people, California king mattresses may require three or four pairs of hands after they are unboxed.

About the Author

Staff Writer, Product Testing Team

Garen Glazier

Staff Writer, Product Testing Team

Position: Side sleeper

Temperature: Neutral sleeper

Chronotype: Wolf

Garen is a health and lifestyle content creator. She realized the importance of sleep when her children made getting a good night's rest more challenging. Garen is always learning something new about the wide world of sleep and sleep products. Married with two girls, ages 7 and 11, she is a book nerd and a lover of pop music, travel, and the Pacific Northwest.

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